BACnet MSTP Slave to Modbus TCP Master converter for industrial automation

Industrial BACnet MSTP Slave to Modbus TCP Master converter, housing type A (slim), DIN rail mount.

HD67673 allows you to connect a BACnet Master (for example a Supervisory System, SCADA, or PLC) with multiple Modbus TCP slaves. This converter acts as a reliable communication bridge, ensuring bi-directional data exchange between building automation and industrial control systems. It is widely used in BMS (Building Management Systems), HVAC control, smart metering, lighting management, and integration of industrial machinery. The device is compact, robust, and DIN rail mountable, making it suitable for both new installations and retrofit projects. Converter is easy to configure thanks to the free SW67673 software, designed with a user-friendly interface that reduces commissioning time.

Configuration:

Thanks to the SW67673 software on your PC you can:

• Define the parameters of the BACnet MS/TP line (baud rate, device ID, communication timeout, etc.)
• Define the parameters of the Modbus TCP line including slave addressing and polling intervals
• Create BACnet objects that contain data read from Modbus TCP slaves (analog inputs, digital values, counters)
• Define BACnet objects used to send control commands to Modbus TCP slaves
• Update the device firmware and backup/restore configuration files

The configuration tool also provides real-time diagnostic functions, allowing integrators to monitor active communication, check mapping consistency, and ensure seamless operation between protocols.

Characteristics:

• Support for up to 1024 BACnet objects (Read + Write)
• Triple isolation between BACnet – Power Supply, BACnet – Modbus, Power Supply – Modbus
• Reliable bi-directional information exchange between BACnet MS/TP bus and Modbus TCP bus
• Mountable on standard 35mm DIN Rail, slim housing type A for optimized space usage
• Compact dimensions and low power consumption for efficient integration in control cabinets
• Industrial-grade design with operating temperature -40°C to +85°C

Specifications:

• Ports: 1x RS-485; 1x Ethernet
• Modbus protocol: Modbus TCP Master
• BACnet protocol: BACnet MS/TP Slave
• Data Rates Modbus TCP: 10/100 Base-T autosensing
• Data Rates BACnet: Up to 115200 bps
• Modbus connector: RJ45
• BACnet connector: 3-way 5mm removable screw terminal
• Power supply: 8 ~ 24VAC; 12 ~ 35VDC
• Power supply connector: 2-way 5mm terminal block
• Operating temperature: -40°C to +85°C
• Dimensions: 120 mm x 23 mm x 107 mm (DxWxH)
• Weight: approx. 200g
• Mechanical fixing: 35mm DIN Rail mount
• Software: SW67673 (Free download)
• ORDER CODE: HD67673-MSTP-A1

The converter is particularly suited for projects where BACnet MS/TP devices need to be integrated with Modbus TCP controllers. For example, it can connect HVAC BACnet controllers with a Modbus-based energy management system, or allow lighting BACnet modules to be supervised from a Modbus TCP SCADA. Its robust electrical isolation guarantees protection against surges and ground loops, which is crucial in large-scale industrial and building automation networks.

The device is compliant with international standards for communication protocols, ensuring compatibility with most BACnet-certified devices and Modbus TCP equipment on the market. This makes it an excellent choice for system integrators who need a reliable, future-proof gateway with a long lifecycle and strong technical support. Its extended temperature range, slim profile, and reliable isolation make it ideal not only for control panels in buildings but also for industrial plants, data centers, and energy facilities.

Configurator – Software SW67673 FREE DOWNLOAD